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  • MABE146 - Anti-5-methylcytosine Antibody, clone 33D3

MABE146 Sigma-Aldrich

Anti-5-methylcytosine Antibody, clone 33D3

Use Anti-5-methylcytosine Antibody, clone 33D3 (mouse monoclonal antibody) validated in DB, IF, SB, IHC(P), Flow Cytometry, MeDIP to detect 5-methylcytosine also known as methylcytosine, methylcytidine.

Synonym: methylcytosine, methylcytidine

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories 1-A0, Alphabetical Index, Antibodies, Primary Antibodies
clone   33D3, monoclonal
biological source   mouse
application(s)   Southern blotting: suitable
  dot blot: suitable
  flow cytometry: suitable
  immunofluorescence: suitable
  immunohistochemistry: suitable (paraffin)
  methylated DNA immunoprecipitation (MeDIP): suitable
species reactivity   mouse, human, human
shipped in   wet ice
isotype   IgG1λ
antibody product type   primary antibodies
Quality Level   100


General description

5-Methylcytosine is a modified base found in the DNA of higher eukaryotes. Methylation of DNA is known to be involved in the control of gene expression and is mediated by a class of enzymes known as DNA methyltransferases (DNMT’s). Appropriate cytosine methylation is essential for normal development and maintenance of mammalian cells. Alternations in DNA methylation patterns is often associated with cancers with the turmor DNA being hypomethylated compared to DNA from normal tissues.


Predicted to react with multiple species.

This antibody detects 5-Methylcytosine, but not unmethylated cytosine.


Ovalbumin-conjugated 5-methylcytosine


Habib, M., et al. (1999). Exp Cell Res. 249:46-53

Hernadez-Blazquez, F.J., et al. (2000). Gut. 47:689-693

Flow Cytometry
Reynaud, C.C., et al. (1992). Cancer Lett. 61(3):255-262

Keshet, I., et al. (2006). Nat Genet. 38(2):149-153

Research Category
Epigenetics & Nuclear Function

Research Sub Category
Chromatin Biology

Target description

Detects methylated cytosine

Physical form

Format: Purified

Protein A

Purified mouse monoclonal IgG1λ in buffer containing PBS and 0.05% sodium azide.

Storage and Stability

Stable for 1 year at -20°C from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


Evaluated by Dot Blot in methylated and unmethylated BRCA1.

Dot Blot Analysis: 1 µg/mL of this antibody detected methylcytosine in methylated and unmethylated BRCA1.


Replaces: MABE527

Analysis Note

Methylated and unmethylated BRCA1

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.


Certificate of Analysis (COA)

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Protocols & Articles


Antibody Basics

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Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy

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